4.5/7 Classification and variation Flashcards
1
Q
what is a species
A
a group of organisms which can reproduce
2
Q
what are the roles of courtship behaviour
A
- species identification
- recognising sexual maturity
- recognising opposite sex
- recognise fertile individuals
- arousal (ability to release gametes)
- forming pair bonds
3
Q
what is phylogenetic classification
A
arranges species into groups based on evolutionary relationships
4
Q
how does classification use hierarchies
A
smaller groups and within larger groups, no overlap between them
5
Q
what is the order of taxa
A
- domain
- kingdom
- phylum
- class
- order
- family
- genus
- species
6
Q
what is the binomial
A
how to identify species =
Genus species
7
Q
how can you assess genetic diversity/variation
A
- observable characteristics
- base sequence of DNA
- base sequence of mRNA
- amino acid sequence of proteins
- immunological studies (look at the extent of a species-specific antibody binding to complementary antigen related species)
8
Q
what would be the most likely way to compare WITHIN a species
A
DNA base sequence - minor variations
9
Q
what would be the most likely way to compare BETWEEN species
A
amino acid sequence of proteins - to reduce noise
10
Q
how to make quantitative comparisons
A
- collect data from a random sample
- calculate mean and standard deviation
- compare means and SDs and look for overlapping (work within ±2SDs)
